Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a8a13ba844a19a3…

MALICIOUS

PDF

37.9 KB Authoring application: pdf-parser
MD5: 7beb43b94a14bd7af4384f2984b9408a SHA-1: 33f29a9905d7a12a44dca1998b665fa290887523 SHA-256: 0a8a13ba844a19a39b3233bf9506e68c27e9c7af733d609ffb81eb480e7a1b87
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the structure suggests it's designed to lure users to click on these links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://nswminiaturepony.com.au/uploads/1/3/0/4/130483983/3242605.pdf
    • http://wrentham.shop/uploads/1/3/0/7/130739267/vejiminume.pdf
    • http://mcculley-cuppan.com/uploads/1/3/0/4/130476075/fimov.pdf
    • http://bfgcommercial.com/uploads/1/3/0/5/130547450/mujilexeleguwuwado.pdf
    • http://capturedmoments.today/uploads/1/3/0/7/130739162/7742364.pdf
    • http://beautyproducts.business/uploads/1/3/0/4/130476481/503e753ccdab44.pdf
    • http://noblecountylibrary.com/uploads/1/3/0/5/130588928/nenividoloxevar_bugubidudux_lubes_jawokig.pdf
    • http://kapital-ltd.ru/uploads/2020/01/29/gudamugezewugodi.pdf
    • http://nickysawesomewebsite.com/uploads/1/3/0/4/130479472/89c6b833c907.pdf
    • http://diabetesrelatedretinopathy.org/uploads/1/3/0/4/130483923/diduxotidega-lutimetam-miboxu.pdf
    • http://musicinmyneighborhood.com/uploads/1/3/0/6/130639377/gisad.pdf
    • http://juliejesternewman.com/uploads/1/3/0/4/130476320/130476320.html#11th+ncert+biology+solutions+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001491.bin
fb95cae49a5208fbebb34b80e713fd9a0e80eaeba0a16f371c6c70980bb03d9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1491 8204 bytes

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